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Standard deviation of a list
I want to find mean and standard deviation of 1st, 2nd,... digits of several (Z) lists. For example, I have
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How to extract numbers from a string and get an array of ints?
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In-memory size of a Python structure
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The recommendation from an earlier question on this was to use sys.getsizeof(), quoting:
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Reset keys of array elements in php?
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edited Jun 7 '18 at 19:04
Riz-waan
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answered May 8 '12 ...
Crontab Day of the Week syntax
In crontab does the Day of the Week field run from 0 - 6 or 1 -7 ?
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Minimizing NExpectation for a custom distribution in Mathematica
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How do I convert a numpy array to (and display) an image?
...(and display) an image:
from PIL import Image
import numpy as np
w, h = 512, 512
data = np.zeros((h, w, 3), dtype=np.uint8)
data[0:256, 0:256] = [255, 0, 0] # red patch in upper left
img = Image.fromarray(data, 'RGB')
img.save('my.png')
img.show()
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Can't connect to local MySQL server through socket '/tmp/mysql.sock
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What is the “-->” operator in C++?
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edited Dec 23 '18 at 15:46
community wiki
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